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Chapter
7
Technical Information
HC8X Heat Control
7-36
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8010043
Retrofitting / Conductor Bar Configuration
7
Retrofitting / Conductor Bar Configuration
7.1
Retrofitting the HC8X
Note
The basic configuration of the control unit determines which retrofit kit is selected. When the
HC8X in the basic configuration is equipped with an even number of channels:
Select the retrofit kit with a load relay.
When the HC8X in the basic configuration is equipped with an odd number of channels:
Select the retrofit kit without a load relay.
Determine for the retrofitting of the control unit:
1.
Required fuse value of the thermally delayed overcurrent trip with consideration of the
required power and the wire cross-section.
2.
Type of corresponding retrofit kit (4 A, 8 A, or 16 A with/without load relay).
7.1.1
Retrofitting the HC8X with an Even Number of Channels
Make available the retrofit kit with load relay.
Danger of electrical shock!
Do not touch live parts.
Disconnect all poles of the power section and control section from the supply voltage
before opening the control unit.
Check whether the power section and the control section are free from voltage.
1.
Unscrew two screws from the case cover.
2.
Remove the case cover and pull off the ground conductor.
3.
Find the next free installation area in the control unit.
4.
Position the load relay on the heat sink and screw it on with the two attached cross-
slotted screws.
5.
Insert the four-pole control line plug into the load relay so that the latch points to the
heat sink.
6.
Insert the thermally delayed overcurrent trip from below into the next free drilling of the
stainless steel bracket and secure it with a locking nut.
7.
If required, insert another thermally delayed overcurrent trip from below into the next
free drilling of the stainless steel angle and secure it with a locking nut.
Note
Always plug all wires of the thermally delayed overcurrent trip on the left into the left connec-
tion side (OUTPUT B) of the load relay.
Always plug all wires of the thermally delayed overcurrent trip on the right into the right con-
nection side (OUTPUT A) of the load relay.